'Destiny calling'

Tribune photo by Pete Souza

Michelle Obama joins her husband after Sen. Barack Obama officially entered the race for president in Springfield, Ill., urging Americans who hear "destiny calling" to join him in "the unfinished business of perfecting our union."

Michelle Obama joins her husband after Sen. Barack Obama officially entered the race for president in Springfield, Ill., urging Americans who hear "destiny calling" to join him in "the unfinished business of perfecting our union." (Tribune photo by Pete Souza)

Michelle Obama joins her husband after Sen. Barack Obama officially entered the race for president in Springfield, Ill., urging Americans who hear "destiny calling" to join him in "the unfinished business of perfecting our union."